ParentRunner (JUnit API)

org.junit.runners Class ParentRunner<T>

java.lang.Object
  org.junit.runner.Runner
      org.junit.runners.ParentRunner<T>

所有已实现接口:

Describable, Filterable, Sortable

已知直接子类:

BlockJUnit4ClassRunner, Suite

public abstract class ParentRunner<T>

extends Runner

implements Filterable, Sortable

Provides most of the functionality specific to a Runner that implements a "parent node" in the test tree, with children defined by objects of some data type T. (For BlockJUnit4ClassRunner, T is Method . For Suite, T is Class.) Subclasses must implement finding the children of the node, describing each child, and running each child. ParentRunner will filter and sort children, handle @BeforeClass and @AfterClass methods, create a composite Description, and run children sequentially.

ParentRunner

protected ParentRunner(Class<?> testClass)
                throws org.junit.runners.model.InitializationError

Constructs a new ParentRunner that will run @TestClass

抛出异常:

org.junit.runners.model.InitializationError

getChildren

protected abstract List<T> getChildren()

Returns a list of objects that define the children of this Runner.

describeChild

protected abstract Description describeChild(T child)

Returns a Description for child, which can be assumed to be an element of the list returned by getChildren()

runChild

protected abstract void runChild(T child,
                                 RunNotifier notifier)

Runs the test corresponding to child, which can be assumed to be an element of the list returned by getChildren(). Subclasses are responsible for making sure that relevant test events are reported through notifier

collectInitializationErrors

protected void collectInitializationErrors(List<Throwable> errors)

Adds to errors a throwable for each problem noted with the test class (available from getTestClass()). Default implementation adds an error for each method annotated with @BeforeClass or @AfterClass that is not public static void with no arguments.

validatePublicVoidNoArgMethods

protected void validatePublicVoidNoArgMethods(Class<? extends Annotation> annotation,
                                              boolean isStatic,
                                              List<Throwable> errors)

Adds to errors if any method in this class is annotated with annotation, but:

• is not public, or
• takes parameters, or
• returns something other than void, or
• is static (given isStatic is false), or
• is not static (given isStatic is true).

classBlock

protected org.junit.runners.model.Statement classBlock(RunNotifier notifier)

Constructs a Statement to run all of the tests in the test class. Override to add pre-/post-processing. Here is an outline of the implementation:

• Call runChild(Object, RunNotifier) on each object returned by getChildren() (subject to any imposed filter and sort).
• ALWAYS run all non-overridden @BeforeClass methods on this class and superclasses before the previous step; if any throws an Exception, stop execution and pass the exception on.
• ALWAYS run all non-overridden @AfterClass methods on this class and superclasses before any of the previous steps; all AfterClass methods are always executed: exceptions thrown by previous steps are combined, if necessary, with exceptions from AfterClass methods into a MultipleFailureException.

参数:

notifier -

返回:

Statement

withBeforeClasses

protected org.junit.runners.model.Statement withBeforeClasses(org.junit.runners.model.Statement statement)

Returns a Statement: run all non-overridden @BeforeClass methods on this class and superclasses before executing statement; if any throws an Exception, stop execution and pass the exception on.

withAfterClasses

protected org.junit.runners.model.Statement withAfterClasses(org.junit.runners.model.Statement statement)

Returns a Statement: run all non-overridden @AfterClass methods on this class and superclasses before executing statement; all AfterClass methods are always executed: exceptions thrown by previous steps are combined, if necessary, with exceptions from AfterClass methods into a MultipleFailureException.

childrenInvoker

protected org.junit.runners.model.Statement childrenInvoker(RunNotifier notifier)

Returns a Statement: Call runChild(Object, RunNotifier) on each object returned by getChildren() (subject to any imposed filter and sort)

getName

protected String getName()

Returns a name used to describe this Runner

getTestClass

public final org.junit.runners.model.TestClass getTestClass()

Returns a TestClass object wrapping the class to be executed.

getDescription

public Description getDescription()

规范说明:

getDescription in interface Describable

规范说明:

getDescription in class Runner

返回:

a Description showing the tests to be run by the receiver

run

public void run(RunNotifier notifier)

Description copied from class: Runner

Run the tests for this runner.

规范说明:

run in class Runner

参数:

notifier - will be notified of events while tests are being run--tests being started, finishing, and failing

filter

public void filter(Filter filter)
            throws NoTestsRemainException

Description copied from interface: Filterable

Remove tests that don't pass the parameter filter.

规范说明:

filter in interface Filterable

参数:

filter - the Filter to apply

抛出异常:

NoTestsRemainException - if all tests are filtered out

sort

public void sort(Sorter sorter)

Description copied from interface: Sortable

Sorts the tests using sorter

规范说明:

sort in interface Sortable

参数:

sorter - the Sorter to use for sorting the tests

setScheduler

public void setScheduler(org.junit.runners.model.RunnerScheduler scheduler)

Sets a scheduler that determines the order and parallelization of children. Highly experimental feature that may change.